MS200T Oil pump Question

[flht01]

I've been working on a 200t the last few days and have a question about the adjustable oil pump. It seemed to be putting out a lot of oil so I made an attempt to adjust it. I've got several saws that have the adjustable pump and they only have a small range of adjustment, about 90 degrees if I remember correctly. I turned the screw on this 200t several rounds counterclockwise. It was hard to turn and I suspect it was just spinning, but it did feel like it finally tightened (maybe my imagination). Then I turned it back clockwise until the screw slot was facing the front of the saw. I've never had one of these pumps apart, could someone explain how the adjusting bolt regulates the oil flow and what could be keeping this one from "hitting the stops".

 

[troutfisher]

Do You still have your owner's manual? There is a section on adjusting the oiler. I have a ms200t, but i cant find my manual.

 

[troutfisher]

I think you bottom the screw, like a jet, then back it off until you get the desired oil flow. the book gives a starting off point.

 

[begleytree]

I just looked at my manual. turn to E for ecomony, turn ccw to lessen, turn cw for more oil flow. thats all it says
-Ralph

 

[flht01]

Do You still have your owner's manual? There is a section on adjusting the oiler. I have a ms200t, but i cant find my manual.

I don't have a manual, maybe someone will come along and post the procedure (or email a pdf of the manual). Sounds like it might have been turned out too far causing it to dump too much. I haven't had a chance to run it enough to tell if I slowed it down or not.

 

[Timberhauler]

Hold it about 1/2 an inch over a peice of paper and run it at half throttle for about 30 to 45 seconds after the engine has reached normal operating temperature.That will tell you.I had to turn the oil flow down on all of my 200T's because they were running out of oil before they were running out of gas.

 

[flht01]

Hold it about 1/2 an inch over a peice of paper and run it at half throttle for about 30 to 45 seconds after the engine has reached normal operating temperature.That will tell you.I had to turn the oil flow down on all of my 200T's because they were running out of oil before they were running out of gas.

Sounds good, I'll give it a try.

I guess what really threw me a curve was being able to turn the screw that many rounds before it felt like it stopped. I guess I've never paid that much attention to my other oilers, most are still set like they were from the factory and was concerned there might be something wrong with the pump.

 

[Xtra]

"I turned the screw on this 200t several rounds counterclockwise."

turned the screw "rounds"??!!!
It only goes 1/4 turn ~ 90 degrees.
Sounds like your is stripped or broken.

It's pretty easy to replace. Just pull off the spocket, unscrew the clutch and it's located under the clutch.

 

[Lakeside53]

Your pump casting is broken. You'll need to fins the right point by experimentation... it doesn't matter how many times you turn it around and and around... it has no threads..

 

[flht01]

...
turned the screw "rounds"??!!!
It only goes 1/4 turn ~ 90 degrees.
Sounds like your is stripped or broken.
...

Your pump casting is broken. You'll need to fins the right point by experimentation... it doesn't matter how many times you turn it around and and around... it has no threads..

I didn't think it was suppose to travel but 90 degrees, thanks for confirming that.

Any problem with running it this way after finding the best position?

 

[Lakeside53]

Nope - just run it - it will stay in postion.

 

[flht01]

Nope - just run it - it will stay in postion.

Many Thanks !

 

[Manco]

The adjusting screw regulates oil flow by rgulating how far back and forth the pump "piston" can move back and forth therefore controlling how much oil is pumped out per revolution of the drive gear. The screw sets the distance in 4 different positions. One position lets the "piston" move just a hair-little to no oil. Position#2 lets it move a little farther, #3 and 4 even more. Theres no threads to stop. It just controls what position the piston is in to control "stroke" of the oil pump. Kinda like a hand pump water well with 4 positions.